GS / CALCULATOR

Capacitor bank and power-factor correction

Calculate kvar, rated voltage, steps, achieved PF, overcompensation and harmonic warnings.

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Power-factor correction capacitor bank
GS / INPUTS

Preliminary capacitor-bank selection with risk checks

Enter active power, current and target PF, network and capacitor voltage, frequency and step size. Flag nonlinear loads.

Inputs

Calculation result125 kvar
Required compensation
94.72 kvar
Required nameplate rating
114.61 kvar
Number of steps
5
Achieved PF
0.962
Current before
370.1 A
Current after
300.23 A
Current reduction
18.88%
Capacitance per delta unit
685.1 µF
Capacitance per star unit
2,055.2 µF

Calculation method

Qc = P × (tan φ₁ − tan φ₂) · Qnameplate = Qc × (Vc / Vn)²

Interpreting the result

The nameplate rating is corrected for voltage. Leading PF, staging and harmonics require an electrical engineer's review before manufacture.

The result is an initial estimate based on your inputs. Check equipment nameplates, manufacturer data, installation conditions and project requirements before final selection.

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